Safe primary lithium cell

A lithium battery and battery technology, applied in primary batteries, secondary batteries, primary battery use/maintenance, etc., can solve problems such as battery internal pressure and temperature rise, battery drum bottom, battery failure safety, etc., to prevent overcurrent Large, anti-reverse charge, simple design effect

Active Publication Date: 2006-07-19
EVE ENERGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of battery has the following disadvantages: 1. Under the condition of short circuit, the internal pressure and temperature of the battery rise at the same time, not only the battery is prone to premature failure, but also has great safety hazards, such as explosion; 2. The external circuit current suddenly If it is too large, the internal pressure and temperature of the battery will rise at the same time, and there will be great safety hazards, such as explosion; 3. Under the condition of overdischarge, the internal pressure of the battery is too high, and the battery will have a drum bottom or even explode 4. After adding a diode to prevent reverse charging, the output voltage of the battery will drop to a certain extent
[0003] Existing solutions invariably use simple electronics for a single function

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] An electronic circuit board with detection and control functions is connected in parallel on the safety battery of the present invention, such as figure 1 As shown, the primary lithium battery is used to supply power to the outside through an electronic circuit board. Such as Figure 10 As shown, the electronic circuit protection board 2 is installed on the top of the battery 1, on which are provided a positive lead 5 and a negative lead 6 of the circuit board, respectively connected to the positive lead 3 and the negative lead 4 of the battery 1.

[0037] Figure 4 It is the module diagram of the electronic circuit board to realize the following functions: 1. Prevent short circuit of primary lithium battery; 2. Prevent excessive current; 3. Prevent over-discharge; 4. Prevent external circuit from reverse charging the battery; A bypass function is also available.

[0038] The electronic circuit board is composed of modules A, B, C, D, E, F, and G. Module A is the mai...

Embodiment 2

[0044] In the invention, an electronic circuit board with detection and control functions is connected in parallel to the battery, so that the primary lithium battery can supply power to the outside through an electronic circuit board. Such as Figure 10 As shown, the electronic circuit protection board 2 is installed on the top of the battery 1, on which are provided a positive lead 5 and a negative lead 6 of the circuit board, respectively connected to the positive lead 3 and the negative lead 4 of the battery 1.

[0045] Figure 7 It is the module diagram of the electronic circuit board, which realizes the following functions: 1. Prevent short circuit of primary lithium battery; 2. Prevent excessive current; 3. Prevent over-discharge; 4. Prevent external circuit from reverse charging the battery.

[0046] The electronic circuit board is composed of modules A, B, C, D, E, and F. Module A is the main controller for analyzing and judging the signals of each monitor and output...

Embodiment 3

[0052] For example, in order to meet specific usage conditions, the required functions are as follows: 1. Prevent hidden dangers caused by a short circuit of a lithium battery; 2. Prevent safety problems caused by excessive current; 3. Prevent over-discharge.

[0053] The module and electronic circuit diagram in Example 2 are completely adopted, and the change of removing the charging function can be completed only by adjusting the internal settings of the IC.

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PUM

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Abstract

The invention relates to a battery which can improve the safety and electric property. Said inventive safe battery is connected to a electric circuit protective board with detecting and controlling functions to make the one-time lithium battery own the functions as avoiding short circuit, instant current increase, and over-discharge without reducing the output voltage, and in special condition, the invention can supply bypass function. The invention has simple design, small size and variable position and shape of said electric circuit protective board. The invention can be used in one-time lithium battery as lithium/thionyl chloride (Li/SOCl2), lithium/chlorosulfuric acid (Li/SO2Cl2), lithium/sulfur dioxide (Li/SO2), and lithium/manganese bioxide (Li/MnO2).

Description

technical field [0001] The invention relates to the field of batteries, in particular to a battery with improved safety and electrical performance. Background technique [0002] Lithium thionyl chloride battery, hereinafter referred to as lithium sub-battery, has a service life of more than 10 years and is the battery system with the highest specific energy. The reliability and safety requirements for this type of battery performance are very high. This type of battery has the following disadvantages: 1. Under the condition of short circuit, the internal pressure and temperature of the battery rise at the same time, not only the battery is prone to premature failure, but also has great safety hazards, such as explosion; 2. The external circuit current suddenly If it is too large, the internal pressure and temperature of the battery will rise at the same time, and there will be great safety hazards, such as explosion; 3. Under the condition of overdischarge, the internal pres...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M6/50H01M6/14H01M6/00H01M10/48
CPCY02E60/10
Inventor 刘金成沈立新
Owner EVE ENERGY CO LTD
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